Shoutbox

Ok. So I've tried quite a few different things with sending a response, but it crashes whenever I try and send a message...
What am I doing wrong?

code:

---

function OnEvent_ChatWndSendMessage(ChatWnd,Origin, Message, MessageKind){
    if (Message.substr(0,6).toLowerCase() == "/AwayI"){
        var param = Message.substr(7);
        switch(param){
            case "enable":
                AI.State = true;
                break;
            case "disable":
                AI.State = false;
                break;
            case "commands":
                alert("Enable\nDisable\nCommands");
                break;
            /*default:
                alert("Invalid Command! Type \"/AwayI Commands\" to see a list of valid commands");
                break;
                */
        }
    }
}

---